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Mesoporous silica synthesised by a local kaolin as efficient adsorbent for the real effluent textile treatment

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Abstract

In 1992, Mobil company synthesized and characterized the first mesopoous material [1]. Since then, these materials have attracted the interest of many researchers. This interest is justified by their particular properties such as a regular arrangement of the channels, a modulable pore size of 2 to 30 nm greater than zeolites, and a high specific surface area greater than 1000 m 2 .g-1. Physicochemicals propreties allow to use them in various and varied fields such as catalysis, separation, chromatography, biochemistry and adsorption. In our work the mesoporous silica synthesised by local raw clay is a new nanostructured material for environmental textile effluent treatment applications. The DD3 (Djebel Debagh) Kaolin comes from the municipality of Guelma in Algeria and it has been chemically and thermally treated. In addition, the pluronic L35 (EO11PO16EO11) has been used as a structuring agent. X-ray diffraction, X-ray fluorescence, transmission electron microscopy, and nitrogen adsorption-desorption were used to evaluate the textural and structural properties and composition of the synthesized material. The synthesized material gives a surface area of 161 m² / g which is superior to (92 m² / g) the surface area of nanostructured materials in the literature [2]. Its adsorption properties have been tested on textile industry effluents and indicate a good efficiency of treatment by a reduction of most parameters (BOD, COD, etc ...). This suggests that this new mesoporous material synthesised by clay available and inexpensive could have applications in the environmental field. [1] Guisnet , M.,et al., (2006) Les zéolithes, Un nanomonde au service de la catalyse, EDP Sciences. [2] Auta, M.,et al., (2012) Chem. Eng. J. 198-19:219-227. Preferred format: Oral Session number and name: D. Functionalized clays, health and cosmetics D1 Recent progress on nanotechnology and nanomaterials from clay minerals.
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Dates and versions

hal-02779675 , version 1 (10-06-2020)

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  • HAL Id : hal-02779675 , version 1

Cite

Fatima Zohra, E L Berrichi, Ibtissem Slatni, Houda Ferdjaoui, Joëlle Duplay. Mesoporous silica synthesised by a local kaolin as efficient adsorbent for the real effluent textile treatment. euroclay, Jul 2019, Paris, France. ⟨hal-02779675⟩
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